On Running Cloudsurfer Max from On Running is a max‑cushion running shoe built for long runs and a smooth, rockered ride thanks to a double-layer CloudTec Phase midsole. citeturn0search0 Key attributes: White | Polyester | Maximum cushioning for long distances | Breathable mesh upper | Impact-absorbing midsole | Double CloudTec Phase cushioning | Helion superfoam midsole | Rubber outsole pads for grip | Standard lacing | Rockered midsole profile | Knitted tongue | Next-generation eyestays | Dimensions & fit: Heel-to-toe drop: 6 mm. citeturn0search0turn0news13 | Approx. stack height: 37 mm (heel) / 31 mm (forefoot). citeturn0news13 | Weight: ~270 g (varies by size). citeturn0search0turn0search2 | Regular to roomy fit; wide version available. | Composition & care: Polyester (upper/mesh). citeturn0search0turn0search5 | Helion superfoam (midsole). citeturn0search0turn0news13 | Rubber (outsole). citeturn0search0turn0search2 | Clean by hand: spot clean with mild soap and water and air dry. Avoid machine washing and tumble drying. Remove insoles and loosen laces before cleaning; dry in a well-ventilated area away from direct heat. citeturn1search2turn1search3